From 5174b1f98204beee79eba74c4cda5f2be0a60a8f Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 28 Feb 2013 11:02:40 +1000
Subject: [PATCH] dix: XAllowEvents() on a touch event means accepting it

A sync grab is the owner once it gets events. If it doesn't replay the
event it will get all events from this touch, equivalent to accepting it.

If the touch has ended before XAllowEvents() is called, we also now need to
send the TouchEnd event and clean-up since we won't see anything more from
this touch.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 dix/events.c    | 10 ++++++++++
 dix/touch.c     | 14 ++++++++++++++
 include/input.h |  1 +
 3 files changed, 25 insertions(+)

diff --git a/dix/events.c b/dix/events.c
index 051205233..da9bd3821 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -1742,6 +1742,16 @@ AllowSome(ClientPtr client, TimeStamp time, DeviceIntPtr thisDev, int newState)
         }
         break;
     }
+
+    /* We've unfrozen the grab. If the grab was a touch grab, we're now the
+     * owner and expected to accept/reject it. Reject == ReplayPointer which
+     * we've handled in ComputeFreezes() (during DeactivateGrab) above,
+     * anything else is accept.
+     */
+    if (newState != NOT_GRABBED /* Replay */ &&
+        IsTouchEvent((InternalEvent*)grabinfo->sync.event)) {
+        TouchAcceptAndEnd(thisDev, grabinfo->sync.event->touchid);
+    }
 }
 
 /**
diff --git a/dix/touch.c b/dix/touch.c
index f7112fca9..0cbc2eb01 100644
--- a/dix/touch.c
+++ b/dix/touch.c
@@ -1102,3 +1102,17 @@ TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resourc
     GetDixTouchEnd(&event, dev, ti, flags);
     DeliverTouchEvents(dev, ti, &event, resource);
 }
+
+void
+TouchAcceptAndEnd(DeviceIntPtr dev, int touchid)
+{
+    TouchPointInfoPtr ti = TouchFindByClientID(dev, touchid);
+    if (!ti)
+        return;
+
+    TouchListenerAcceptReject(dev, ti, 0, XIAcceptTouch);
+    if (ti->pending_finish)
+        TouchEmitTouchEnd(dev, ti, 0, 0);
+    if (ti->num_listeners <= 1)
+        TouchEndTouch(dev, ti);
+}
diff --git a/include/input.h b/include/input.h
index ef8191b60..1745e9ade 100644
--- a/include/input.h
+++ b/include/input.h
@@ -591,6 +591,7 @@ extern void TouchEndPhysicallyActiveTouches(DeviceIntPtr dev);
 extern void TouchDeliverDeviceClassesChangedEvent(TouchPointInfoPtr ti,
                                                   Time time, XID resource);
 extern void TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resource);
+extern void TouchAcceptAndEnd(DeviceIntPtr dev, int touchid);
 
 /* misc event helpers */
 extern Mask GetEventMask(DeviceIntPtr dev, xEvent *ev, InputClientsPtr clients);